GB2196696B - Pumps - Google Patents

Pumps

Info

Publication number
GB2196696B
GB2196696B GB8723999A GB8723999A GB2196696B GB 2196696 B GB2196696 B GB 2196696B GB 8723999 A GB8723999 A GB 8723999A GB 8723999 A GB8723999 A GB 8723999A GB 2196696 B GB2196696 B GB 2196696B
Authority
GB
United Kingdom
Prior art keywords
pumps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB8723999A
Other versions
GB2196696A (en
GB8723999D0 (en
Inventor
Robert Elderton Poole
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UTILE ENGINEERING CO Ltd
Original Assignee
UTILE ENGINEERING CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UTILE ENGINEERING CO Ltd filed Critical UTILE ENGINEERING CO Ltd
Publication of GB8723999D0 publication Critical patent/GB8723999D0/en
Publication of GB2196696A publication Critical patent/GB2196696A/en
Application granted granted Critical
Publication of GB2196696B publication Critical patent/GB2196696B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/10—Vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/50—Pumps with means for introducing gas under pressure for ballasting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
GB8723999A 1986-10-22 1987-10-13 Pumps Expired - Lifetime GB2196696B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868625337A GB8625337D0 (en) 1986-10-22 1986-10-22 Pumps

Publications (3)

Publication Number Publication Date
GB8723999D0 GB8723999D0 (en) 1987-11-18
GB2196696A GB2196696A (en) 1988-05-05
GB2196696B true GB2196696B (en) 1991-05-29

Family

ID=10606162

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868625337A Pending GB8625337D0 (en) 1986-10-22 1986-10-22 Pumps
GB8723999A Expired - Lifetime GB2196696B (en) 1986-10-22 1987-10-13 Pumps

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868625337A Pending GB8625337D0 (en) 1986-10-22 1986-10-22 Pumps

Country Status (2)

Country Link
US (1) US4826407A (en)
GB (2) GB8625337D0 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3887149D1 (en) * 1988-10-24 1994-02-24 Leybold Ag Twin-shaft vacuum pump and method for its operation.
DE4010755C2 (en) * 1990-04-04 1998-11-05 Pierburg Ag Vane cell or swivel vane vacuum pump
DE4223315A1 (en) * 1991-07-30 1993-02-04 Mannesmann Ag INJECTION-COOLED MULTI-CELL COMPRESSOR
US6394776B2 (en) * 2000-01-18 2002-05-28 David Allan Boldenow Double rotor-vane pump
US7189068B2 (en) * 2003-09-19 2007-03-13 Gast Manufacturing, Inc. Sound reduced rotary vane compressor
DE102007043350B3 (en) * 2007-09-12 2009-05-28 Oerlikon Leybold Vacuum Gmbh Vacuum pump and method for controlling a gas ballast supply to a vacuum pump
US8123506B2 (en) * 2008-05-29 2012-02-28 Flsmidth A/S Rotary sliding vane compressor with a secondary compressed fluid inlet
EP3483448B1 (en) * 2017-11-13 2020-05-13 Pfeiffer Vacuum Gmbh Vacuum pump with ballast gas valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB670793A (en) * 1949-06-02 1952-04-23 Peerless & Ericsson Ltd Improvements in rotary air compressors
US3820923A (en) * 1971-12-01 1974-06-28 Airfina Ets Single stage or multistage rotary compressor
GB1436049A (en) * 1973-02-05 1976-05-19 Fanberg R Z Mechanical refrigertation system
US4268230A (en) * 1979-04-26 1981-05-19 Varian Associates, Inc. Gas ballast for oil sealed mechanical vacuum vane pump
US4295804A (en) * 1978-11-07 1981-10-20 Adriano Pezzot Intermediately cooled air vacuum pump with balancing of the pressures
GB2087484A (en) * 1980-10-11 1982-05-26 Drum Engineering The Co Ltd Rotary vacuum-pumps

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2639855A (en) * 1948-02-06 1953-05-26 William T Daniels Variable vacuum and pressure rotary pump
US2779533A (en) * 1953-12-22 1957-01-29 Leybolds Nachfolger E High-vacuum rotary oil pumps
US2885143A (en) * 1955-07-29 1959-05-05 W M Welch Mfg Company Vacuum pump
DE1287729B (en) * 1961-10-19 1969-01-23

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB670793A (en) * 1949-06-02 1952-04-23 Peerless & Ericsson Ltd Improvements in rotary air compressors
US3820923A (en) * 1971-12-01 1974-06-28 Airfina Ets Single stage or multistage rotary compressor
GB1436049A (en) * 1973-02-05 1976-05-19 Fanberg R Z Mechanical refrigertation system
US4295804A (en) * 1978-11-07 1981-10-20 Adriano Pezzot Intermediately cooled air vacuum pump with balancing of the pressures
US4268230A (en) * 1979-04-26 1981-05-19 Varian Associates, Inc. Gas ballast for oil sealed mechanical vacuum vane pump
GB2087484A (en) * 1980-10-11 1982-05-26 Drum Engineering The Co Ltd Rotary vacuum-pumps

Also Published As

Publication number Publication date
US4826407A (en) 1989-05-02
GB2196696A (en) 1988-05-05
GB8625337D0 (en) 1986-11-26
GB8723999D0 (en) 1987-11-18

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20071012